| 摘要 |
PROBLEM TO BE SOLVED: To add natural noise components to a musical sound signal because musical sound signals of natural instruments contain noise components generated according to waveform periods, these are one of the factors to create expressions peculiar to the musical sound, however, there has been such a failure as when these musical sound signals are stored in a waveform memory sound source and reproduced, a same noise component is repeatedly reproduced, therefore, the noise component rings in the ears. SOLUTION: Periodic component signals and noise component signals having continuous frequency components are individually generated by a periodic waveform generator part 60 and a noise waveform generator part 80 and synthesized. The noise waveform generator part 80 produces natural noise components by securing a long loop size or varying the noise component signals at random. |
